Attachment to hypodermic syringe for injecting drugs from ampoules



March 25, 1941. H. N. FERELSON arm.

ATTACHMENT T0 HYPODERIQIC SYRINGE FOR INJECTING DRUGS FROM AMPOULES Filed Dec. 30, 1938 2: a: 5 m H W O Y f/Zjg ATTORNEY Patented Mar. 25, 1941 PATENT OFFICE ATTACHMENT T HYPODERIVHC SYRINGE FOR INJECTING DRUGS FROM AMIOULES Harold N. Perelson, Ozone Park, and Sebastian Smigel, New York, N. Y.

Application December 30, 1938, Serial No. 248,494

.2 Claims.

This invention relates to hypodermic syringes for injecting drugs from ampoules.

Heretofore it has been necessary to transfer the contents of a glass ampoule to the barrel of the hypodermic syringe before the drug could be injected. This process has been found objectionable because of the danger of contamination and spillage. It is, therefore, an object of this invention to obviate such objection, by providing a hypodermic syringe of the character described so constructed that the ampoule may be mounted thereon and the contents thereto forced directly through the needle of the syringe, whereby to prevent contamination and spillage, and hence making it unnecessary to overfill the ampoule in order to insure an injection of sufficient liquid to make a proper dosage.

Another object of this invention is to provide a strong and durable hypodermic syringe of the character described, which shall be relatively inexpensive to manufacture, easy to operate, safe to use and yet practical and eificient to a high degree.

Other objects of this invention will in part be obvious and in part hereinafter pointed out.

The invention accordingly consists in the features of construction, combinations of elements,

and arrangement of parts which will be exemplified in the construction hereinafter described, and of which the scope of application will be indicated in the following claims.

In the accompanying drawing, in which is shown various possible illustrative embodiments of thi invention- Fig. 1 is an elevational view of a hypodermic syringe embodying the invention, with an ampoule mounted thereon.

' Fig. 2 is an elevational cross-sectional view of part of the syringe and the ampoule; and

Fig. 3 is a view similar to Fig. 2, but illustrating a modified form of the invention.

Referring now in detail to the drawing, ||l designates a hypodermic syringe embodying the invention for injecting the contents of a glass ampoule I The ampoule may be of the usual kind containing drugs but preferably has a smooth neck l2.

The syringe l0 comprises a cylindrical barrel I?) open at its upper end and having a bottom wall l4. Extending from the bottom wall I4 is a projection l5, for the purposes hereinafter appearing.

There also projects downwardly from the bottom wall M, a projection l6 formed with a through opening communicating with the inside of the barrel |3. Within the barrel I3 is the usual plunger I8. Attached to the projection I6 is a metal tubular member l9 communicating with the opening Extending from the tube I9 is a portion 20 bent at right angles thereto, and extending upwardly from said ortion 20, is a portion 2|, aligned with projection I5 of the barrel, and open at its upper end, and terminating below the bottom wall I4 of the barrel.

Fixed to portion of the tube I9 is a head 23 carrying the usual injection needle 24. The tube portion 20 projects into the head 23, and the tube portion 2| extends upwardly axially of the head and projects above the head. The head 23 is furthermore formed with a socket 25 at its upper end, concentric with tube portion 2|, to receive the neck |2 of the ampoule II.

It willnow be noted that the ampoule i inverted so that its neck points downwardly, and is received within the socket 25. A cylindrical washer 21 may be interposed between the neck |2 of the ampoule and the socket 25 of the needle head 23. It will now be understood that portion 2| of the tube 2|] projects upwardly through the neck l2 into the ampoule 25 Connected to the projection l5 of the barrel I3 is a coil compression spring 30, and attached to the lower end of the spring is a socket member 3| adapted to receive the upper end of the ampoule II, the spring 30 serves to press the ampoule downwardly to hold the same on the injector head 23.

The operation of the device will now be described:

The ampoule is mounted on the injector head after the glass tip is removed therefrom, and the plunger I8 is pressed downwardly to force the air through tube l9 into the ampoule for forcing the contents thereof downwardly through the injector needle 24. This arrangement serves to maintain sterility of the contents of the ampoule and prevents spillage.

In Fig. 3 there is illustrated a hypodermic syringe |0a embodying the invention and illustrating a modified construction. The springe Illa comprises a barrel |3a having a bottom wall He having an axial downwardly extending projection |6a formed with a through opening Ila communicating with the interior of the barrel.

Attached to the projection |6a is a. member having a passage 4| communicating with the through opening Ila. Member 40 is also formed with a tube 42 extending at right angles to passage 4|, and communicating therewith. Extending upwardly from the tube 42, and communicating therewith, is a tubular portion 43. Integrally formed with the tubes 42, 43 and surrounding the tube 43, and concentric therewith, is a socketed portion M. Integrally formed with the socket portion 44 and extending downwardly therefrom, is an angular tube 45 connected to member 40.

At the bottom end of member 40 is a head 46 carrying the usual hypodermic needle 47. The head 46 has a passage 38 communicating with the tube 45 and hence with the socket l4.

Mounted within the socket 44 is an inverted ampoule 50, the neck whereof is received in the socket. The tube 43 projects upwardly into the ampoule 50. A spring clamp 55 serves to clamp the ampoule 59 to the barrel 13a. When the plunger l8a of the hypodermic syringe Illa is pushed downwardly, air will be forced through passages Ila, 4|, 42 and 43 into the ampoule 50 and hence forcing the contents of said ampoule through the socket M, tube 45, passage 48, and throughthe injecting needle 47.

It will thus be seen that there is provided a device in which the several objects of this invention are achieved, and which is well adapted to meet the conditions of practical use.

As various possible embodiments might be made of the above invention, and as various changes might be made in the embodiments: above set forth, it is to be understood that all matter herein set forth or shown in the accompanying drawing is to be interpreted as illustrative and not in a limiting sense.

Having thus described our invention, we claim as new and desire to secure by Letters Patent:

1. A hypodermic syringe comprising a barrel, a plunger within said barrel, 2. wall of said barrel being provided with an extending projection formed with a through opening, a tubular member attached to said projection and having a downwardly extending portion, a portion extending to one side of said downwardly extending portion, and an upwardly extending portion extending from said last mentioned portion, said upwardly extending portion being open at the top, an injector head on said tubular member disposed concentrically of said upwardly extending portion of said tubular member and being formed with a socket at its upper end adapted to receive the neck of an ampoule, the upwardly extending portion of said tubular member being adapted to project through the neck of the ampoule into said ampoule, and an injector needle on said head adapted to communicate with said ampoule.

2. A hypodermic syringe comprising a barrel, a plunger within. said barrel, a wall of said barrel being provided with a downwarly extending projection formed with a through opening, a tubular member attached to said projection and having a downwardly extending portion, a portion extending to one side of said downwardly extending portion, and an upwardly extending portion extending from said last mentioned portion, said upwardly extending portion being open at the top, an injector head on said tubular member disposed concentrically of said upwardly extending portion of said tubular member and being formed with a socket at its upper end adapted to receive the neck of an ampoule, the upwardly extending portion of said tubular member being adapted to project through the neck of the ampoule into said ampoule, an injector needle on said head adapted to communicate with said ampoule, and spring meansto hold the ampoule within said socket.

HAROLD N. PERELSON. SEBASTIAN SMIGEL. 

